Illumination system

Abstract

An illumination system includes at least one illumination module and a mechanism. The illumination module includes a light source generating a light beam, a first reflector, in which the light source is positioned, including a first reflective surface to reflect the light beam to form a first beam, and a second reflector including a second reflective surface reflecting the light beam and the first beam to form a second beam and a third beam, wherein the second and third beams combine to generate a projection pattern. The mechanism adjusts the position of the second reflector relative to the light source to change the projection pattern.

1. An illumination system, comprising
 at least one illumination module comprising:
 a light source generating a light beam; 
 a first reflector in which the light source is positioned comprising a first reflective surface to reflect the light beam to form a first beam; and 
 a second reflector comprising a second reflective surface reflecting the light beam and the first beam to form a second beam and a third beam, wherein the second and third beams combine to generate a projection pattern; and 
 
 a mechanism adjusting the position of the second reflector relative to the light source to change the projection pattern. 
 
     
     
       2. The illumination system as claimed in  claim 1 , wherein the light source is a light emitting diode. 
     
     
       3. The illumination system as claimed in  claim 1 , wherein the second reflective surface is a parabolic surface or an elliptic surface. 
     
     
       4. The illumination system as claimed in  claim 3 , wherein the light source is positioned on the focus portion of the parabolic surface. 
     
     
       5. The illumination system as claimed in  claim 1 , wherein the first reflector is a curved surface mirror. 
     
     
       6. The illumination system as claimed in  claim 1 , wherein the mechanism comprises:
 a base comprising a central shaft and an extending portion extending from the central shaft, and the light source and the first reflector are positioned on the extending portion; 
 an inner tube positioned around the central shaft; 
 an outer tube positioned around the inner tube and the second reflector is positioned on the outer tube; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the outer tube, whereby the second reflector approaches or moves away from the light source. 
 
     
     
       7. The illumination system as claimed in  claim 6 , wherein the outer tube is constrained by a lateral wall of the base and unable to rotate. 
     
     
       8. The illumination system as claimed in  claim 7 , wherein the outer tube has at least one groove having two ends with different heights, and the groove has a narrow shape. 
     
     
       9. The illumination system as claimed in  claim 7 , wherein the outer tube has a groove having a spiral shape. 
     
     
       10. The illumination system as claimed in  claim 6 , wherein the inner tube has at least one post engaging the groove, and when the inner tube rotates, the post moves along the groove to move the outer tube, whereby the second reflector approaches or moves away from the light source. 
     
     
       11. The illumination system as claimed in  claim 6  further comprising a heat dissipation module connected to the central shaft. 
     
     
       12. The illumination system as claimed in  claim 11 , wherein the heat dissipation module is integrally formed with the central shaft. 
     
     
       13. The illumination system as claimed in  claim 1 , wherein the mechanism moves the second reflector to adjust the position of the second reflector relative to the light source to change the projection pattern. 
     
     
       14. The illumination system as claimed in  claim 1 , wherein the mechanism moves the light source to adjust the position of the light source relative to the second reflector to change the projection pattern. 
     
     
       15. The illumination system as claimed in  claim 1 , wherein the mechanism comprises:
 a base comprising a central shaft and a wall on which the second reflector is disposed; 
 an inner tube positioned around the central shaft; 
 an outer tube positioned around the inner tube; 
 a sub-base disposed on the outer tube, and the light source and the first reflector being disposed on the sub-base; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the outer tube along the central shaft, whereby the light source approaches or moves away from the second reflector. 
 
     
     
       16. The illumination system as claimed in  claim 1 , wherein the mechanism comprises:
 a base comprising a central shaft and a wall on which the second reflector is disposed; 
 an inner tube positioned around the central shaft; 
 a sub-base disposed on the inner tube, the light source and the first reflector being disposed on the sub-base; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the sub-base along the central shaft, whereby the light source approaches or moves away from the second reflector. 
 
     
     
       17. The illumination system as claimed in  claim 16 , wherein the inner tube has a groove, and the central shaft has a post movably engaging the groove, and when the push rod is pushed to move the inner tube, the sub-base is constrained by the movement of the base. 
     
     
       18. An operating lamp, comprising:
 a plurality of illumination modules, wherein each illumination module comprises:
 a light source generating a light beam; 
 a first reflector in which the light source is positioned comprising a first reflective surface to reflect the light beam to form a first beam; and 
 a second reflector comprising a second reflective surface reflecting the light beam and the first beam to form a second beam and a third beam, wherein the second and third beams combine to generate a projection pattern; and 
 
 a mechanism adjusting the position of the second reflector relative to the light source to change the projection pattern. 
 
     
     
       19. The operating lamp as claimed in  claim 18 , wherein the light source is a light emitting diode. 
     
     
       20. The operating lamp as claimed in  claim 18 , wherein the second reflective surface is a parabolic surface or an elliptic surface. 
     
     
       21. The operating lamp as claimed in  claim 20 , wherein the light source is positioned on the focus portion of the parabolic surface. 
     
     
       22. The operating lamp as claimed in  claim 18 , wherein the first reflector is a curved surface mirror. 
     
     
       23. The operating lamp as claimed in  claim 18 , wherein the mechanism comprises:
 a base comprising a central shaft and an extending portion extending from the central shaft, and the light source and the first reflector are positioned on the extending portion; 
 an inner tube positioned around the central shaft; 
 an outer tube positioned around the inner tube and the second reflector is positioned on the outer tube; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the outer tube along the central shaft, whereby the second reflector approaches or moves away from the light source. 
 
     
     
       24. The operating lamp as claimed in  claim 23 , wherein the outer tube has at least one spiral groove, and the inner tube has at least one post engaging the spiral groove, and when the inner tube rotates, the outer tube moves, whereby the second reflector approaches or moves away from the light source. 
     
     
       25. The operating lamp as claimed in  claim 23  further comprising a heat dissipation module connected to the central shaft. 
     
     
       26. The operating lamp as claimed in  claim 25 , wherein the heat dissipation module is integrally formed with the central shaft. 
     
     
       27. The operating lamp as claimed in  claim 18 , wherein the mechanism comprises:
 a base comprising a central shaft and a wall on which the second reflector is disposed; 
 an inner tube positioned around the central shaft; 
 an outer tube positioned around the inner tube; 
 a sub-base disposed on the outer tube, and the light source and the first reflector being disposed on the sub-base; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the outer tube along the central shaft, whereby the light source approaches or moves away from the second reflector. 
 
     
     
       28. The operating lamp as claimed in  claim 18 , wherein the mechanism comprises:
 a base comprising a central shaft and a wall on which the second reflector is disposed; 
 an inner tube positioned around the central shaft; 
 a sub-base disposed on the inner tube, and the light source and the first reflector being disposed on the sub-base; and 
 a push rod connected to the inner tube, wherein the push rod is pushed to rotate the inner tube so as to move the sub-base along the central shaft, whereby the light source approaches or moves away from the second reflector. 
 
     
     
       29. The operating lamp as claimed in  claim 28 , wherein the inner tube has a groove, and the central shaft has a post movably engaging the groove, and when the push rod is pushed to move the inner tube, the sub-base is constrained by the movement of the base.